Hand-wheel



- RH.' MBTCALP.,

HAND WHEEL.

APPLIoATIoN FILED un 27, 1903.-

NO MODEL.

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A TOHNEYS.

Patented February 9, 1964.

ERNEST HENRY METCALF, OF BRIDGEPORT, CONNECTICUT.

HAND-WHEEL.

l SPECIFICATION forming part of LettersPatent No. 751,533, dated February 9, 1904.

Application filed May 27, 1903. SerialANo. 158,972. (No model.)

To 'all whom it may concern:

Be it known that I, ERNEST HENRY MET- CALF, a citizen of the United States, anda resident of Bridgeport, in the Acounty of Fairield and State of Connecticut, have invented a new and Improved Hand-Wheel, of which the following is a full, clear, and exact description.

This invention relates to a class of metal hand-wheels having tubular skeleton rims that vremain cool when mounted on a valve that in service becomes hot.

The object of my invention is to provide novel details of construction for a hand-wheel of the class indicated which may be generally employed, that will remain cool, be capable of rapid production, be very strong and durable, and inexpensive to manufacture.

The invention consists in the novel construction and combinationof parts, as is hereinafter described, and defined in the appended claims.

' substantially on the line 2 2 in Fig. 1.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the lfigures.

. Figure l is a side view of the complete hand- Wheel. Fig. 2 is a transverse sectional-gew 1g. 3 is a plan view of a blank cut into shape from sheet metal and from which is formed the skeleton wheel-rim. Fig. 4 is a side view of one of the reinforcing-disks that form the side walls offthe hand-wheels. Fig. 5 is a transverse sectional view substantially on the line 5 5 in Fig. 4, and Fig. 6 is a side view of a filling-block employed` as a body-piece for the hand-wheel.

In Fig. 3 the preferred form of the blank that when suitably bent comprises the skeleton wheel-rim 10 is shown consisting, essentially, of an oblong ilat plate ofmetal which is rectangular, peripherally considered, and having formed at diagonally opposite corners the two similar integral dovetail tongues c.

In the material ofthe lblank a series of slots a is formed, these slots being evenly spaced apart by the intervening bars a', these slots and bars extending throughout the area of the blank, considered longitudinally. As

shown, the slots a are of such a length as to permit bars bto remain one at each side of the blank, said vside bars of equal width being integral with the cross-bars a'.

In the formation of a wheel-rim 10 from the flat blank that has been described it is irst given tubular form, so as to causethe side bars b to nearly contact edgewise. Then said side bars are bent laterally, where they join the cross-bars a', so as to dispose them parallel-and in contact with each other.

The side bars are now curved together yedgewise into circular form, which will dispose the cross-bars a radially and separate them equally, thus forming` a skeleton tubu lar rim. y

. In the formation of the rim 10 the dovetail tongues c are brought together and lapped upon each other, so that their edges conform, and these laterally-contacting tongues c o are 4projected inwardly, as is shown by dotted flat filling-block 11 is such as adapts it to fit neatly in the circularly-edged opening defined by the inner edges of the circularly-bent bars b, and when the block is placed therein the lapped tongues o are linserted intothe dove- -tail notch c, which holds the tubular rim 10 in place on the filling-block, so'as to prevent its rotatable movement thereon..

Two similar clamping-plates 12 are provided as the side walls for the hand-wheel, each of said plates being cut from sheet metal and struck by suitable dies into the form shown. In Figs. 4 and 5 it will be seen that the clamping-plates 12 are each peripherally circular and are dished somewhat, projectingan annular flange g laterallytherefrom. The flange g' is concaved on its exterior surface and also is indented, dut, or nicked at suitable points equally distant from each other, thus `producing a continuous series of undulations that eX- tend throughout the area of th'e flange andaf#V ford equally-spaced projections /L on the concaved surface of said flange.

The pair of clamping-plates 12 are of such relative diameter as to adapt them to fit oppositely upon the tubular body of the skeleton wheel-rim 10, the spaced projections t fitting between adjacent bars a of said rim. Three perforations d are formed in the iat portions ofthe clamping-plates l2, said perforations being so positioned that when the plates are in place on the sides of the filling-block 11 these perforations in the clamping-plates will be disposed opposite the perforations CZ in the filling-block, so that a rivet or bolt may be inserted through each set of alined perforations.

Each clamping-plate 12 is centrally apertured at e', these apertures having like angular form to that of the central hole e in the filling-block 11 and conform therewith when the plates 12 are secured upon the iilling-block by means of the rivets c', that drawthe plates rmly against the opposite sides of 'the wheelrim 10.

When the parts of the hand-wheel are assembled and secured together as described, the projections /L will be embedded between adjacent pairs of the spaced bars a on the rim 10 and afford lateral support thereto, thus rendering the hand-wheel as an entirety very light, strong, and durable and adapted to keep measurably cool when mounted on a valvestem for operation of the valve that in service is highly heated, it being obvious that the central holes c e' in the iilling block and clamping-plates are designed to receive the end of the valve-stem Whereon the hand-wheel is to be secured.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A hand-wheel comprising a skeleton tubular rim, having an inwardly-projecting circular Harige, a central iilling-block whereon the rim is mounted, means for holding the rim from turning on the periphery of the fillingblock, and two clamping-disks securable on the rim and filling-block.

2. A hand-Wheel comprising a skeleton tubular rim having an inwardly-projecting circular flange, a dovetail tongue projected inward from said flange, a circularly-edged fiat iilling-block having a dovetail notch that receives the tongue when the rimis mounted on the iilling-block, two similar clamping-plates, each having an annular peripheral ange that projects laterally and outwardly, said flange being concaved on its outer surface, and formed with spaced projections that enter between the bars on the rim for their lateral support, and means for securing the clamping-plates on the rim and iilling-block, said plates and the filling-block having a central perforation.

In testimony whereof` I have signed my name to this specification in the presence or' two subscribing witnesses.

A. H. RosWELL, R. B. ATHERTON. 

